RESUMEN
The title compound, C12H9N3O2, was obtained as a cyclized oxa-diazole derivative from substituted thio-semicarbazide in the presence of manganese(II) acetate. The furan ring is disordered over two orientations, with occupancies of 0.76â (2) and 0.24â (2). The dihedral angles between the central oxa-diazole ring and the pendant phenyl ring and furan ring (major disorder component) are 3.34â (18) and 5.7â (6)°, respectively. A short intra-molecular C-Hâ¯O contact generates an S(6) ring. In the crystal, inversion dimers linked by pairs of N-Hâ¯N hydrogen bonds generate R 2 (2)[8] loops. The dimers are linked by C-Hâ¯π and π-π inter-actions [range of centroid-centroid distances = 3.291â (2)-3.460â (8)â Å], generating a three-dimensional network.